<template>
	<div class="my-tab-bar">
		<div class="tab-item" :class="{'current':activeIndex===index}" v-for="(item,index) in arr" :key="index"  @click="change(index,item.componentName)">
			<!-- 图标 -->
			<span class="iconfont" :class="item.iconText"></span>
			<!-- 文字 -->
			<span>{{item.text}}</span>
		</div>
	</div>
</template>

<script>
	export default {
    data(){
  return {
    activeIndex:0
  }
},
props:{
  arr:{
    type:Array,
    required:true,
    //2-5位校验
    validator(val){
      // console.log(val);
      if (val.length>=2 && val.length<=5) {
       return true
      }else{
       return false
      }
    }
  }
},
methods:{
  change(index,componentName){
    this.activeIndex=index
    this.$emit('change',componentName)
  }
}
	}
</script>

<style lang="less" scoped>
	.my-tab-bar {
		position: fixed;
		left: 0;
		bottom: 0;
		width: 100%;
		height: 50px;
		border-top: 1px solid #ccc;
		display: flex;
		justify-content: space-around;
		align-items: center;
		background-color: white;

		.tab-item {
			display: flex;
			flex-direction: column;
			align-items: center;
		}
	}

	.current {
		color: #1d7bff;
	}
</style>
